Home / 23,059.20-31,820.40-13,628.64

Finding the Fourth Proportional to 23,059.20, 31,820.40 and 13,628.64

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Solution

The fourth proportional to 23,059.20, 31,820.40 and 13,628.64 is: 18,806.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,059.20 : 31,820.40 = 13,628.64 : x
  2. Step 2: Convert to fraction form
    23,059.20/31,820.40 = 13,628.64/x
  3. Step 3: Cross multiply
    23,059.20x = 31,820.40 × 13,628.64
  4. Step 4: Simplify right side
    23,059.20x = 433,668,776.26
  5. Step 5: Solve for x
    x = 433,668,776.26/23,059.20
  6. Step 6: Final answer
    x = 18,806.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.